Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2006 Aug 15;31(16):2495-7.

Highly sensitive single-beam heterodyne coherent anti-Stokes Raman scattering.

Author information

Physikalische Chemie, Philipps-Universit├Ąt Marburg, Hans-Meerwein-Strrasse, D-35032 Marburg,. Germany.


Single-beam coherent anti-Stokes Raman-scattering (CARS) microspectroscopy achieves a complete CARS scheme with a femtosecond laser. Here, we introduce heterodyne detection in a simple experimental extension: the optical fields driving the CARS process and the local oscillator used for heterodyning are derived from a single beam of ultrashort laser pulses by pulse shaping. The heterodyne signal is amplified by more than 3 orders of magnitude and is linearly dependent on the concentration of Raman scatterers. This dramatically increases the sensitivity of chemically selective detection at microscopic resolution while maintaining the simplicity of the single-beam setup.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center